Android 获取图片宽和高以及 ScaleType

ScaleType

https://cloud.tencent.com/developer/article/2039262

获取图片宽和高

利用glide

 Glide.with(getContext())
                    .asBitmap()
                    .load(qaBannerBean.imagePath)
                    .into(new SimpleTarget<Bitmap>() {
                        @Override
                        public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {
                            //height 就是高
                            int height = resource.getHeight();
                            Glide.with(getContext()).load(qaBannerBean.imagePath).into(ivBanner);
                            ivBanner.setVisibility(View.VISIBLE);

                        }
                    });

利用BitmapFactory
因为是直接把图片加载到内存容易OOM
参考：
https://www.jianshu.com/p/b49beee4a57e
等比例缩放
https://blog.csdn.net/qq_34995257/article/details/52414944

Glide.with(activity).load(yourUrl).asBitmap().into(new SimpleTarget<Bitmap>(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL) {
                    @Override
                    public void onResourceReady(Bitmap resource, GlideAnimation<? super Bitmap> glideAnimation) {
                        int imageWidth = resource.getWidth();
                        int imageHeight = resource.getHeight();
                        int height = ScreenUtils.getScreenWidth() * imageHeight / imageWidth;
                        ViewGroup.LayoutParams para = imageView.getLayoutParams();
                        para.height = height;
                        para.width = ScreenUtils.getScreenWidth();
                        imageView.setImageBitmap(resource);
                    }
                });